the reason, advances in technology such as fracking, horizohorizontal drilling and or improvements which increase natural gas production by 27% in just four years, making the u.s. number one in gas with oil on its way. >> we're talking decades, if not into the hundreds of years of supply in north america. >> it's been estimated by the energy information agency that we could be the number one oil producer in the world by 2020, surpassing saudi arabia, so this is a big deal. it's a game-changing opportunity, and it's of historic proportions. >> reporter: even though who share the administration desire to reduce the use the petro chemicals acknowledge projections that the u.s. will produce one-third more of its own oil by 2020. 1 analyst said self reliance must include alternatives such as wind, solar, and more. >> we can reduce our dependence on foreign oil by shifting to electric vehicles and investing in public transportatatn as well as having much more efficient cars which are already underway. >> either way, analysts say being more energy sufficient could bring manufacturers back to th